Michael Koelsch

Features over 30 different dinosaur species with 12 easy science experiments.

When Trixie Belden and Honey Wheeler find a cut diamond embedded in the dirt floor of the old abandoned gatehouse, they set out to find whoever left it there.

While spending Christmas break at an Arizona dude ranch, Trixie and the Bob-Whites work to solve several mysteries--a phony cowboy, disappearing staff, and puzzling cries in the night.

Tells how Kris Kringle got his start as the world's favorite gift giver by struggling to bring toys and happiness to the children of Sombertown in a story based on the popular animated television program.

Knowing that the mountain trails are unsafe for bicycles due to fallen trees and other obstacles, Jonas helps organize a clean-up crew in early spring, but when he hears someone else biking on the trail he cannot resist a ride of his own.

While studying kung fu to try to overcome his clumsiness, Mark learns something that may interfere with his friends' plans for a group Halloween costume.

When an old friend comes to visit, Charlie is not at all happy with the changes he sees--especially when Rick gets reckless on his snowboard, chasing X and some of Charlie's other friends off the slopes.

While organizing an ice carnival to raise funds for her pen pal's school library, Trixie investigates a mysterious problem facing Regan and a run of thefts and accidents in the neighborhood.